SYNOPSIS OF THE FLOKA OF COLORADO. PU 



branches toward the summit (some times imbranched;) leaves slightly 

 decurrent; lower ones 2 7 -3 7 long, linear-spatulate, obtuse: upper ones 

 linear-lanceolate, acute; heads clustered; mvolncral scales shining, yel- 

 lowish-white, scarious, oblong-ovate, rather obtuse; pistillate florets very 

 numerous, in several rows outside of the perfect ones; acheuia one-half 

 larger and smoother than in the European plant. Brandegee. Xear 

 Denver, Dr. Smith; H. B. Smith. Wet Mountain Valley, Redjield. 



GNAPHALIUM STRiCTim, Gr. P<ic. R. R., v. 4, p. 110. Annual, white- 

 woolly; stern simple, or branched from the base, strict, 3 7 -9 7 high, vir- 

 gate ; leaves narrowly linear, elongated, uniform throughout, I'-IJ 7 long, 

 rather crowded ; heads closely glomerated in the axils, leafy -bra cfed ; in- 

 volucre companulate, outer scales lanceolate, brownish, inner ones linear, 

 white at the apex; receptacle broad and flat; acheiiia smooth. Hall 

 <t- Harbour, 311. Wet places in the mountains. 



GNAPHALIUM DECUBBENS, Ives. "Subalpiue; rw."Hall it* Har- 

 bour, 312. Hoopes. 



AXTENNARIA GABPATHICA, 11. Bl\, Var. PULCHEBK OIA, Hook. Whole 



plant covered with a soft silvery tomentum, becoming somewhat glab- 

 rate with age; stems simple, leafy, 9 7 -15 7 high, sterile ones not stolonif- 

 erous; radical leaves narrowly oblanceolate, 3'-4' long, acute, 3-5 

 nerved, upper leaves gradually smaller ; corymb more or less spreading : 

 involucre woolly at the base, scales brownish, tips white, not crisped. 

 Canby. South Park, Porter. Canon City, Brandegee. Plains of the 

 Platte and Long's Peak, Coulter. 



AXTENXABIA ALPIXA, Grertn. Cifspitose, producing stoloniferous. 

 flowerless stems ; flowering stems 2'-8 7 high, simple ; leaves &'&' long, 

 white-tomentose, the radical ones spatulate, the cauline linear ; heads 3- 

 7, nearly sessile in capitate clusters ; involucre somewhat woolly at the 

 base ; scales olivaceous with paler and erosely- denticulate, narrowed tips, 

 rather obtuse in the sterile heads, but acute in the fertile ; pappus of 

 the sterile flowers strongly clavate. Hall <( Harbour, 310 : Parry. Clear 

 Creek, Canon and Twin Lakes, Coulter. 



ANTENXABIA DIOICA, Gaertn. Sterile stems stoloniferous, 7 -1 high, 

 leafy; leaves silvery-tomentose. canescenton the lower or on both sides; 

 the radical spatulate, 1-nerved or 3-nerved at base, the cauline lanceo- 

 late or linear, appressed ; heads usually many in the capitate or open 

 corymbs ; scales of the involucre with loose-denticulate, mostly obtuse 

 tips, white, ochroleucous, rose-color or purple; achenia perfectly smooth. 

 Parry; Canby; B. H. Smith ; Porter; Brandegee ; Coulter. Common at 

 middle elevations. 



ARNICA ANGUSTIFOLIA, Yahl. More or less villous ; stems 4 7 -! high, 

 bearing a single head; leaves lanceolate, acute or obtuse, entire or 

 sparingly denticulate, 3-nerved; the radical and lowest tapering into 

 winged petioles, cauline 1-3 pairs, sessile; involucre villous-hirsute : 

 achenia hirsute. Hall it* Harbour, 334; Parry. Canon City, Brandegee. 

 Long's Peak, Monument Park, Horse Shoe Mountain, and Sierra Madre 

 Range, Coulter. "A variable species, from the low and middle to the 

 alpine region; flowering early and late/' 



Yar. EBADIATA, Or. Proc. Am. Acad., Marcli, 1S63, p. G8. Heads discoid : 

 leaves broader; scales of the involucre longer and narrower; usually 

 taller and larger in every way, often 2 high; ripe achenia in our speci- 

 mens hirsute. Hall i(- Harbour, 338. Parry, 10. Gothic Mountain. 

 Coulter. 



ARNICA CHAMISSOXIS, Less. Hirsute-pubescent or somewhat woolly: 



